Selective data writer coil
AssigneeSeagate Technology LLC
InventorsKirill A. Rivkin, JianHua Xue, Wei Tian, Lei Lu, Jian Zhong
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Abstract
A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.
Claims20
An apparatus comprising a write pole of a data writer positioned adjacent a writer coil having multiple turns each connected to a controller, the controller adapted to selectively activate less than all the multiple turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the multiple turns in response to the data writer being positioned over a second portion of the data storage medium.
An apparatus comprising:
- a data storage medium;
- a data writer positioned proximal the data storage medium, the data writer comprising a write pole positioned adjacent a writer coil, the writer coil having a first turn positioned proximal an air bearing surface and a second turn positioned distal the air bearing surface;
- and
- a controller connected to the first turn via a first control line and to the second turn via a second control line, the controller adapted to selectively activate only the first turn in response to the data writer being positioned over a first portion of a data storage medium and selectively activate the first and second turns in response to the data writer being positioned over a second portion of the data storage medium.
A method comprising:
- positioning a data writer proximal a data storage medium, the data writer comprising multiple turns positioned proximal a write pole;
- activating less than all the multiple turns with a controller in response to the data writer being positioned over a first portion of the data storage medium;
- and
- activating all the multiple turns with the controller in response to the data writer being positioned over a second portion of the data storage medium.
Dependencies are inferred from the claim text.